Fossil Shark Teeth

Update: this may be an Isurus retroflexus instead of C. hastalis.

I think that is a brachiopod. 

Cincinnaticrinus pentagonus

I've called these Plectorthis. Next image looks like Cincinnetina. Not 100% sure though. @Tidgy's Dad.

@Tidgy's Dad what do you think of these (this one and the next one)? Initially I had them, especially the second one, as bivalves because of their large size and perceived symmetry, but now they seem more likely to be brachiopods?
 
@NickG also curious what you think, did we ever settle on a good ID for these?

@connorp what do you think of these? Zygospira? The next image as well

Crinoid is much more likely.

@JamieLynn fair enough!  I have a pretty cheap camera on my scope and it’s good enough for now but I definitely want to upgrade eventually. 

With the geometric surface ornamentation, I'd definitely lean Crinoids for this

@Bringing Fossils to Life - these are micros so all are at or under 1/8 inch. I think fish plate is probably accurate. Thanks!